ab897479e48a4327a979716261b5e27eef2def3a494331b244aa9e01dc9cf076

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2024, 13:31

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General

Target

2024-01-24_eb6ad122a9b662b43dd2c06b1e50fba0_cryptolocker.exe
Size

53KB
MD5

eb6ad122a9b662b43dd2c06b1e50fba0
SHA1

213dbed64777d854541c1df260369f5f51198d4c
SHA256

ab897479e48a4327a979716261b5e27eef2def3a494331b244aa9e01dc9cf076
SHA512

b52a1b022acb856f30965039d404a92c49c7a25ecbe0c8a9f9a6e401e281cd700f2519029ebedec5961cb247426ae0de837bcea13b6ed2f2d9c5cc71c73c8e35
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vaTiSfQaV2LN7L:X6QFElP6n+gJBMOtEvwDpjBtE1yILN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023039-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023039-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-24_eb6ad122a9b662b43dd2c06b1e50fba0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2092	asih.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2836 wrote to memory of 2092	2836	2024-01-24_eb6ad122a9b662b43dd2c06b1e50fba0_cryptolocker.exe	88
PID 2836 wrote to memory of 2092	2836	2024-01-24_eb6ad122a9b662b43dd2c06b1e50fba0_cryptolocker.exe	88
PID 2836 wrote to memory of 2092	2836	2024-01-24_eb6ad122a9b662b43dd2c06b1e50fba0_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-24_eb6ad122a9b662b43dd2c06b1e50fba0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_eb6ad122a9b662b43dd2c06b1e50fba0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2836
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
53KB

MD5
ca1a452dcab7d154095794d493478510

SHA1
a6872eb97d42034a12c7c270657d05b55b76fc42

SHA256
2a8d28f3374723305c6231ef0a89d3b88df5ee45728dc891e4cf2261ebe5b82d

SHA512
2a6ed084b0025c34c569d4e96679c154ec79d834905578fd6f811fc912a0fb2e31b05f2d845c0354a320e2a147caacd8d3287191b7961a11c87787256f5ba262

Download Submit
memory/2092-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2092-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2836-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2836-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/2836-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download